<http://schema.org/description>
"The Zvex Sonar tremolo will give you hours of fun and delivers authentic  to advanced tremolo options.  The advanced features of attack, release and depth controls makes this tremolo stand out from the rest, it also has a tempo change feature, will cut the high gain signal to a silence and chop any signal going in or out and that's not all.  Zvex have also added the 'Machine' into the Sonar circuit."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.hotroxuk.com/zvex-vexter-sonar-tremolo-effects-pedal.html>